ST-3232

—— ST-3232B ——
- Wired Mechanical door chime
- Ding Dong sound >80dB
- Power by 4pcs C size battery or external transformer 8-12V

—— ST-3232D ——
- Wired Mechanical door chime
- Ding Dong sound >80dB
- Power by 220-240V AC 50Hz
- With internal PTC self protection